Author: ae
Date: Mon Aug 19 12:42:03 2019
New Revision: 351214
URL: https://svnweb.freebsd.org/changeset/base/351214
Log:
Use TAILQ_FOREACH_SAFE() macro to avoid use after free in soclose().
PR: 239893
MFC after: 1 week
Modified:
head/sys/kern/uipc_socket.c
Modified: head/sys/kern/uipc_socket.c
==============================================================================
--- head/sys/kern/uipc_socket.c Mon Aug 19 11:18:36 2019 (r351213)
+++ head/sys/kern/uipc_socket.c Mon Aug 19 12:42:03 2019 (r351214)
@@ -1131,9 +1131,9 @@ drop:
so->so_state |= SS_NOFDREF;
sorele(so);
if (listening) {
- struct socket *sp;
+ struct socket *sp, *tsp;
- TAILQ_FOREACH(sp, &lqueue, so_list) {
+ TAILQ_FOREACH_SAFE(sp, &lqueue, so_list, tsp) {
SOCK_LOCK(sp);
if (sp->so_count == 0) {
SOCK_UNLOCK(sp);
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